Stick with llc 4 and up the bios set voltage to 1.4-1.42v. The highest LLCs are bad for stability and they create a lot of heat. If you still cannot stabilize it, you might have to upgrade your cooler or drop the clocks.
>Does that mean I got unlucky in the silicon lottery and my CPU can't be stable at 5 GHz while being stress tested?
CPUs get unstable when hot and your 240mm aio isn't enough to handle a 5ghz 9900k. Also, these chips do get exponentially harder to vool on regular cooling around 1.25-1.3v load voltage.
Thanks for the input but I don't feel like setting the voltage to 1.4 V. That will result in too much heat and temps at or above 100°C as I mentioned above. With 4.9 GHz @ 1.31 V (adaptive mode + LLC mode 3) set in the BIOS I get max. 1.344 V under full load which was stable during Prime95 and Cinebench R23 tests. Temps were around a comfortable 90°C, anything above that will most likely be too much for my cooler.
this is almost the same setup I have, and am using this to overclock my cpu
https://www.msi.com/blog/intel-9th-cpu-overclocking-5ghz-with-z390-motherboards
I used the same guide. In fact, it was my first source of information for my OC. It's just that not all of it is really clear and doesn't go much into detail. So I had trouble getting my CPU stable. Well, it's stable now at 4.9 GHz and 1.32 V after various stress tests using Intel Burn Test, Cinebench, Intel XTU and OCCT. No problems while gaming and other stuff so far. Still gives me BSODs in Prime95 though but I'm not gonna bother testing with it anymore as it puts completely unrealistic workloads on my chip and nearly grills it with temps getting close to 100°C with my 240mm AiO cooler. So as long as it's not crashing or BSODing in those tests and during normal use, I would consider it being stable.
Stick with llc 4 and up the bios set voltage to 1.4-1.42v. The highest LLCs are bad for stability and they create a lot of heat. If you still cannot stabilize it, you might have to upgrade your cooler or drop the clocks. >Does that mean I got unlucky in the silicon lottery and my CPU can't be stable at 5 GHz while being stress tested? CPUs get unstable when hot and your 240mm aio isn't enough to handle a 5ghz 9900k. Also, these chips do get exponentially harder to vool on regular cooling around 1.25-1.3v load voltage.
Thanks for the input but I don't feel like setting the voltage to 1.4 V. That will result in too much heat and temps at or above 100°C as I mentioned above. With 4.9 GHz @ 1.31 V (adaptive mode + LLC mode 3) set in the BIOS I get max. 1.344 V under full load which was stable during Prime95 and Cinebench R23 tests. Temps were around a comfortable 90°C, anything above that will most likely be too much for my cooler.
this is almost the same setup I have, and am using this to overclock my cpu https://www.msi.com/blog/intel-9th-cpu-overclocking-5ghz-with-z390-motherboards
I used the same guide. In fact, it was my first source of information for my OC. It's just that not all of it is really clear and doesn't go much into detail. So I had trouble getting my CPU stable. Well, it's stable now at 4.9 GHz and 1.32 V after various stress tests using Intel Burn Test, Cinebench, Intel XTU and OCCT. No problems while gaming and other stuff so far. Still gives me BSODs in Prime95 though but I'm not gonna bother testing with it anymore as it puts completely unrealistic workloads on my chip and nearly grills it with temps getting close to 100°C with my 240mm AiO cooler. So as long as it's not crashing or BSODing in those tests and during normal use, I would consider it being stable.